Can be used with DSLR camera camcorders, tripods, monopods, quick release plates, tripod heads, ball heads, lens plates, etc. D-ring D shaft quick release screw adapter design for very easy to install and remove by hand. Precision-made 1/4 inch male thread with flat head screwdriver slot, silver-plated all metal. Total length: 14mm, Head diameter: 19mm. Compact size, easy to use and convenient to carry. colour:Silver Material:metal Package Contents: 5 * D-ring Mounting Screw Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.